Marble Slab Creamery has pretty good ice cream and absolutely tons of items to mix into it. They mix them in right in front of you and make quite a show of it. All of this is good, but they are somewhat expensive for ice cream. They have lots of locations here in town and are really convienient. I also like that they are open pretty late, at least the one close to UT is. Generally, a good place to get a sweet snack.